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Factory Hot Sale PTFE Flat Washer White Plastic PTFE Gaskets for Pipe Fittings. Chemical & Corrosion Resistance: Resists most acids, alkalis, and organic solvents with superior non-stick properties. Low Friction Coefficient: Features a friction coefficient of 0.05-0.16 for smooth and efficient operation. FDA Compliant Food Grade: Food-grade PTFE parts comply with FDA regulations for safe food processing use. Full Customization Support: Custom sizes, shapes, and specifications available based on customer drawings or samples. Sample Refund Policy: Sample fees are fully refunded upon confirmation of a subsequent bulk order. Versatile Industrial Application: Ideal for chemical, automotive, food, electronic, and hydraulic systems.